145389843 has 16 divisors (see below), whose sum is σ = 226729600. Its totient is φ = 91824840.

The previous prime is 145389749. The next prime is 145389851. The reversal of 145389843 is 348983541.

It is not a de Polignac number, because 145389843 - 2⁹ = 145389331 is a prime.

It is a super-2 number, since 2×145389843² = 42276412895129298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145389863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141193 + ... + 142218.

It is an arithmetic number, because the mean of its divisors is an integer number (14170600).

Almost surely, 2^145389843 is an apocalyptic number.

145389843 is a deficient number, since it is larger than the sum of its proper divisors (81339757).

145389843 is a wasteful number, since it uses less digits than its factorization.

145389843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283439 (or 283433 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 145389843 is about 12057.7710626799. The cubic root of 145389843 is about 525.8291876466.

The spelling of 145389843 in words is "one hundred forty-five million, three hundred eighty-nine thousand, eight hundred forty-three".